Flushing device.



W. F. DREW.

FLUSHING DEVICE.-

APPLICATION FILED AUG.6. I915.

Patented Dec. 26, 1916.

2 SHEETS-SHEET I.

W. F. DREW.

FLUSHING DEVICE.

APPLICATION FILED was. 1915.

1,209,951. Patented Dec. 26,1916.

2 SHEETS-SHEET 2.

m M Inventor:

y Am WARREN F. DREW, OF NEW YORK, N. Y.

FLU-SHING DEVICE.

Application filed August 6, 1915.

To all whom it may concern Be it known that I, VARREN F. Dnnw, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Flushing Devices, of which the following is a specification.

This invention relates to a device for flushing water closets and the like without the intervention of an intermediate supply reservoir of water for the operation, and its novelty consists in the construction and adaptation of the parts as will be more iully hereinafter pointed out.

The purpose of the invention is to supply a device, simple in construction, readily manufactured in greater part out of standard materials, easy to install, readily operated and kept in order and provided with means for varying the amount of water to be delivered at each actuation.

While in the following description I have described the device as applied to the flushing of a water closet, it will be readily understood by those skilled in the art to which the invention appertains that when the principles of the invention have once been comprehended, it may readily be applied to various other uses, for instance, for the delivery from a reservoir under pressure of a predetermined and fixed amount of any fluid adapted to be discharged from such reser- V011.

In the drawings, there is shown in Figures l, 2, 3 and 4 a preferred form of my invention, and in Figs. 5 and 6 a modified form thereof.

In the drawings, Fig. 1 is a miniature view of an'ordinary water closet bowl and seat with my improved device applied thereto; Fig. 2 is an enlarged central vertical section through the device showing the valvein a closed position; Fig. 3 is a transverse section on the plane of the line 33 in Fig. 2, and a plan view of the parts beneath the section plane; Fig. 4 is a modified form of the means for moving the vent control rod; Fig. 5 is an elevation of a modified form of the device, showing its construction when actuated by a lever; and Fig. 6 is a central longitudinal section of the parts shown in Fig. 5 and an elevation of the parts back of the section plane.

In the drawings, 10 is a casing adapted to contain the operative parts of the dev1ce.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Serial m. 44,133.

In the construction shown, it is composed of two cylindrical sections held together by a threaded coupling indicated at 11 in order to promote ease in assembly. It is open at the top and united by a threaded connection to a discharge conduit indicated at 12 and is open at the bottom and united by a threaded connection to a supply conduit indicated at 13. Secured within the lower part of the casing by means of a foraminous flange 1% is a fluid-tight cylinder 15 closed at the bottom and open at the top to admit of the passage of a piston rod 16, the joint between the piston rod and the end of the cylinder being closed by means of a suitable packing indicated at 17.

Within the cylinder is arranged a piston generally indicated at 20 secured in any suitable way to the end of the piston rod 16 and composed of two ioraminous members 21 and 22 having a flexible disk indicated at 23 secured between them, whereby fluid under pressure may slowly pass from the lower side of the piston to the upper side thereof or vice versa, while the exterior side wall of the piston makes a tight fit with its cylinder. Arranged in the space beneath the piston 20 there is placed a compression spring 24, the purpose of which will presently appear.

At the upper end of the casing 10 where it is joined to the outlet conduit 12 above mentioned, there is arranged an annular member 25, the lower edge of which 26 constitutes a valve seat. A valve member 27 adapted to cooperate with this valve seat to close the'aperture within the ring 25, is secured to or made integral with the piston rod 16. A suitable packing indicated at 28 forms a liquid-tight joint between the piston rod and the upper part of the outlet conduit 12. The piston terminates in a push disk indicated at 29 and secured upon the piston by means of a threaded neck 30. In the side of the piston rod 16 which is hollow and at a place adjacent to the upper plate 21 of the piston, there is arranged a vent aperture indicated at 31, whereby it is intended that fluid such as air within the lower part of the cylinder may slowly leak from the cylinder up into the hollow piston rod and thence into the upper portion of the cylinder above the piston. Suitable means are provided for controlling the area of this vent aperture, in the device illustrated, consisting of a long rod 32 threaded into the hollow piston rod at the top and terminating at the bottom in being adapted to be rotated by means'of a squared top 34 which may be turned by an appropriate key through an aperture 35in the disk 29 provided for that purpose.

In the upper part of Fig. 2 there is illustrated a terminal head for the controlling rod 32 provided with a ring by which it may be rotated in place of the key suggested and in Fig.4 there is illustrated'a construction by which the disk 29 may itself be used for the purpose of turning this rod.

The operation of the device is as follows; Assuming that the parts are in the position shown in Fig. 2, the water from the inlet conduit would fill the space within the casing below, around and above the cylinder and beneath the valve 27. If it is desired now to operate the device, the disk 29 is pushed downwardly, which moves the piston downwardly against the resistance of the compression spring 24. As the valve 27 is secured to the piston'rod 16, such valve is thus moved away from its seat and the pressure of the water within the casing 10 causes such water to be discharged into the outlet conduit 12 and thence into the water closet or other place where it is to be used. After the disk 29 has been pushed home, it is released and the valve 27 slowly rises toward its seat, the rapidity of this movement depending upon the resistance thereto afforded by the air within the upper part of the cylinder 15 above the piston as it slowly escapes through the air Vent 31' and the ability of the spring 24 to return the piston and cause the displace ment of the air through the vent. Of course the water will be running through the valve opening until the valve reaches its seat and n the amount of water thus supplied to the outlet conduit depends upon the rapidity with which the valve returns to the closing position, and this in turn is evidently a direct function of the cross sectional area of the air vent in the piston rod, which cross sectional area is controlled by the position of the controlling rod 32 with respect there to. Therefore, by a simple adjustment of this rod, the amount of water that will be 7 supplied from the apparatus at one actuation can be predetermined.

The purpose of the modified form of con trol rod actuating device shown in the upper part of Fig. 2 is to make it possible to vary the position of the controlling rod by simii ply rotating that device, and the same is the purpose of the construction shown inFig. 4.

With the construction shown in the part of Fig. 2 displaying a key, it is obviously impossible to vary the position of the control v rod without an appropriate key.

In the construction shown in Figs. 5 and 6, the piston rod 16 is provided with an annular flange 40 and means are provided to coact with said annular flange for moving the rod to the bottom of its cylinder against the resistance of the compression spring and the a1r pressure consisting of a crank 41 outside of the casing, and a crank shaft 42 arranged at one end of the discharge con-- duit 12, and a lever 43 mounted on the opposite end of the shaft and the end of which is adapted to impingeupon the upper side of the flange 40 to move the rod. The eX- tent of the stroke of the piston may be varied by means of an adjusting ring 44 and an annular set screw 45. common to the arts and needs no particular description. The adjustment of thecontrol rod in the construction referred to is effected This is a device,

by means of a threaded cap indicated at 46 and this is protected from access and injury by a cap 47 threaded into a neck 48 provided in the top of the casing for that purpose. The mode of operating this form of the apparatus is of course the mere movement of the crank 41 in a downward direction and its restoration to normal position by means of the spring provided for that purpose.

A device of the character set forth, comprising a casing having an inlet, an outlet and a valve seat between the two, saidcasing comprising separable sections," a cylinder mounted within the casing in spaced relation to the walls thereof, and having an outstanding supporting flange clamped between the casing sections, said flange permitting the passage of liquid, a tubular valve stem mounted in the casing and having an open inner end terminating in the cylinder, said i end having a lateral portopeninginto the cylinder, a piston mountedin the cylinder and having means for permitting the free passage of liquid therethrough in one direction and preventing such passage in the opposite direction, a plunger rod slidable in the'tubular stem, and having its inner end movable across the lateral port, means for adjusting the rod, means mounted on the said rod externally of the casing for operating the rod, and a valve on, therod cooperating with the valve seat.

In testimony whereof I affix my signature.

WARREN F. DREW 1.

Copies 91. this patent may be obtaincd for five cents each, by addressing the Commissioner of Patents, Washington, D. G. Y 

